Diameter of the Hoberman Sphere: 12 1.92 cm To scale everything down, we must convert the real-world sizes to our scale model sizes. Since we are using the Sun as our starting point, we need to know that the Sun's diameter is 1.3927 x106 km. We must then create a Scale Factor in order to scale down all of the real-world sizes. . E . _ Scale Factor : lHobermanSpherediameter centimeters] : .1, 1.3927 X 106 kilometers What is your Scale Factor? Scale Factor: 8.7542 X 10 A{15